论文信息 - Helicity modulus for an ideal Bose fluid

Helicity modulus for an ideal Bose fluid

The concept of the helicity modulus Yd(T), introduced by Fisher, Barber and Jasnow (see Phys. Rev., vol.A8, p.1111 (1973)), is applied to the ideal Bose gas in d dimensions. Above the critical temperature Tc,d, Y is found to vanish identically, while for T<Tc,d, Yd(T)=(h(cross)2 rho /m)(1-(T/Tc,d)12d/), where rho is the total density. The relevance of these results to more general theories of superfluidity is discussed.

M. N. Barber

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